Is a 15-pound male dog too large to breed with an 8-pound female?

There are probably close enough in size to not have any issues, but it is difficult to say with any certainty. Being mixed breeds, it is possible there may be some possibility that the pups could be larger than the mother. If you choose to proceed, after vet checks of both dogs, have the mother x-rayed about a week before her due date. Your veterinarian should be able to determine litter number and size then may predict more accurately if surgical intervention will be necessary.

I would be concerned that this weight difference might result in puppies that are too large for Bella and that she could end up needing a c-section. She could also end up having fewer, larger puppies. I think you’re better off searching for a smaller male.

Hello Christian! Mila Mumu is adorable! It is never recommend to breed a female to a larger male due to the increased size of puppies and the subsequent increased risk of dystocia (difficulty giving birth) leading to a c section. I would choose a male who is her weight or small than her to avoid any danger, so pick a breed of male that smaller than she is when she is fully grown. Please know that it is never recommend to breed a dog on her first heat. That's because she will not be fully mature either physically and emotionally, and that leads to an increased risk of dystocia as well as possible poor mothering. You should wait to breed her until at least her second or third heat (around 18 months of age). I hope this helps!

It is likely they will be fine. As long as the parents are close in weight (within 10-15 lbs or so, the puppies should be fine. However just make sure to get radiographs when Pixie is beyond 45 days gestation to ensure the feti are not too big to go through the birth canal. I hope everything works out well for your pet Pixie. Best wishes and take care.

Hi, thabks for using Petco Pet Education Center, formerly Petcoach! The size difference may or may not be a problem. If her litter is large the puppies will be smaller. If she only has one or two she’d be at more risk for needing a c-section. I would have your Vet take an X-ray at day 50 to confirm pregnancy and to count puppies. Write down the date she was bred. Dogs are pregnant 60-63 days. Starting at day 55 start taking her temperature daily rectally. Stage 1 labor tends to start 24 hrs once the temperature drops below 99 F. But your Vet can help you and go over concerns once we know she is pregnant and size of the litter. I hope this helps and good luck!

Hello, and thank you for using Petco Pet Education Center, formerly Petcoach. This is a little bit of a predicament! I do share your concerns. While Millie may end up being just fine with this possible pregnancy, there would be concerns if she bred with such a big dog, and especially if she ends up with a small litter. Puppies tend to grow much bigger if there's only 1 or 2, and that coupled with the size difference could cause problems in Millie's labor. The safest option would be to have Millie spayed immediately, and that would remove all the variables of whether she'll end up with a dystocia (problems in labor) later on. This would be the safest option for Millie. If you do choose to let Millie proceed with this possible pregnancy, I definitely recommend touching base with your vet right away for guidance. I would absolutely recommend having Millie x-rayed later in her pregnancy so you know how many puppies you're anticipating (this helps us know when it's ok for her to be done delivering puppies, so we don't worry that there's still a puppy stuck in there!), and learn how to monitor her temperature to watch for the temperature drop that can signal impending labor. This will help you be on the lookout for the warning signs that her labor may not be progressing as it should, which could lead to a necessary C-section. I hope this helps, and feel free to request a consultation if you'd like to discuss this in more detail!

Please consult your vet regarding your options immediately. If her eggs do become fertilized, this could be a very dangerous pregnancy for Coco, as she is so small and the male dog is so big. The puppies would likely be so big that she may need a c-section to give birth, and the pregnancy could be life-threatening.